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प्रश्न
Explain why alkyl halides, though polar, are immiscible with water?
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उत्तर
To be miscible with water, the solute-water force of attraction must be stronger than the solute-solute and water-water forces of attraction. Alkyl halides are polar molecules and so held together by dipole-dipole interactions. Similarly, strong H-bonds exist between the water molecules. The new force of attraction between the alkyl halides and water molecules is weaker than the alkyl halide-alkyl halide and water-water forces of attraction. Hence, alkyl halides (though polar) are immiscible with water.
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\ce{CH3}\phantom{..................}\\
\backslash\phantom{...........}\\
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/\phantom{.............}\\
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\end{array}\]
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\phantom{}|\\
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\phantom{}|\\
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| (I) |  |
|
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| (III) |  |
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